Online TA Profiles
Peter Link, MA
OTA ID#: 101366
| Education Experience: |
BA, Mathematics, Assumption College, 1998 MA, Mathematics, University of California - San Diego, 2004 |
|---|---|
| Focus of Study: | I am currently working on a Masters degree in Mathematics. | Outside Interests: | I enjoy sports - playing and watching, reading, and going to the beach. |
| Postings Answered: | 60 |
| Cumulative OTA Rating: | 4.6/5 What is OTA Rating? |
- Opportunity Cost and Alternative Choices - We make choices as consumers every day. Opportunity cost is defined as a person's ''next best alternative'' or ''the cost of what you give up" when you make a choice. Think of a recent decision you ...
- During recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that the average game lasts 3 hours and 30 minutes. A sample of 17 games revealed the following times to completion. Can we conclude that the mean time for a game is less than 3.50 hours? - During recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that the average game lasts 3 hours and 30 minutes. A sample of 17 games revealed the f ...
- If an employee is selected at random, what is the probability that the employee is female given that the employee is a salaried staff member. (Table summarizing the number of males and females in each category listed within problem) - Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category. Job ...
- Statistics Questions - Does correlation equal causation? Why or why not? What is the relationship between correlation and association? What is association? When would you use regression correlation at your place of ...
- a) Calculate the EMV of the two latter alternatives. b) Construct a decision tree of the product manager's decision and identify the course of action that maximizes EMV. - Techware Incorporated is considering the introduction of two new software products to the market. In particular, the company has four options regarding these two proposed products: introduce neither ...
- A mortgage department of a large bank is studying its recent loans. Given the data provided, estimate a regression model, find the R-squared value, and perform a t-test and an F-test. - A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the ho ...
- Determine whether the group is a sample or a population. Four examples are given. - Determine whether the group is a sample or a population. a. The participants in a study of a new cholesterol drug b. The drivers who received a speeding ticket in Kansas city last month c. Number ...
- Show that a matrix is symmetric and idempotent - Let X be a txk matrix whose columns are linearly independent. Let M=I-X(X'X)^(-1)X'. Show that M is symmetric and idempotent.
- A population consists of ten items, six of which are defective. In a sample of three items, what is the probability that exactly two are defective? Assume the samples are drawn without replacement. - A population consists of ten items, six of which are defective. In a sample of three items, what is the probability that exactly two are defective? Assume the samples are drawn without replacement.
- This problem asks the student to find the eigenvalues of a 3x3 matrix. - Find the eigenvalues of the following matrix Q = Mat[0 0 -2; 1 2 1; 1 0 1]. (See attached file for clearer version.)
- Ideas for a project which entails choosing four companies that are in the same industry and similar in size (total revenues or total assets) from companies included on the Standard and Poor's (S&P 500)? - Can you provide me with some ideas for a project which entails choosing four companies that are in the same industry and similar in size (total revenues or total assets) from companies included on the ...
- Regression Analysis: Estimation of a regression model and Hypothesis Testing of regression coefficients. - a. Determine the regression equation. b. What is the value of R-squared? Comment on the value. c. Conduct a global hypothesis test to determine whether any of the independent variables are differen ...
- At the .01 significance level, is there a relationship between job pressure and age? - A study regarding the relationship between age and the amount of pressure salespersonnel feel in relation to their jobs revealed the following sample information. At the .01 significance level, is th ...
- This problems is about Mean, Median, Mode, Range, and Standard Deviation - Using the following data points (6, 6, 8, 12, 11, 9, 6, 7, 8, 10), create a situational context for the data (for example: the data points represents the number of miles I jogged during my last 10 wor ...
- Determining the standard deviation from a set of data. - At the end of the season, the number of wins in a softball league for each of the eight teams is: {10, 9, 5, 4, 4, 3, 3, 2} What is the standard deviation of wins?
- Calculating the standard deviation given a probability distribution. Attachment in Word. - x P(X=x) (5 @ .12) (6 @ .24) (8 @ .44) (10 @ .20) What is the standard deviation of X?
- How might you go about creating a stronger regression model? - How might you go about creating a stronger regression model? For example, you have a multiple regression model with an adjusted R-Square of 0.49, which would explain 49% of the variance of the depend ...
- Differences between dependent and independent samples - What are differences between dependent and independent samples? Provide examples. What are implications for determining the tests used to analyze data?
- Determine whether the given set of 2x2 matrices are linearly independent - The set of all 2 x 2 real matrices constitutes a real vector space. Determine whether the given set of elements is linearly independent: [ 2 3 ] , [ -1 2 ] ,[ 1 0 ] [ ...
- This problem looks at probabilities in terms of one minus the probability of the compliment in order to solve the problem: if a die is rolled 4 times, what is the probability that a 3 comes up at least once - If a die is rolled 4 times, what is the probability that a 3 comes up at least once?
